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tornavis/source/blender/blenkernel/intern/vfont.c

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/* SPDX-License-Identifier: GPL-2.0-or-later
* Copyright 2001-2002 NaN Holding BV. All rights reserved. */
/** \file
* \ingroup bke
*/
#include <math.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <wctype.h>
#include "CLG_log.h"
#include "MEM_guardedalloc.h"
#include "BLI_ghash.h"
#include "BLI_listbase.h"
#include "BLI_math.h"
#include "BLI_math_base_safe.h"
#include "BLI_path_util.h"
#include "BLI_string.h"
#include "BLI_string_utf8.h"
#include "BLI_threads.h"
#include "BLI_utildefines.h"
#include "BLT_translation.h"
#include "DNA_curve_types.h"
#include "DNA_object_types.h"
#include "DNA_packedFile_types.h"
#include "DNA_vfont_types.h"
#include "BKE_anim_path.h"
#include "BKE_bpath.h"
#include "BKE_curve.h"
#include "BKE_global.h"
#include "BKE_idtype.h"
#include "BKE_lib_id.h"
#include "BKE_main.h"
#include "BKE_packedFile.h"
#include "BKE_vfont.h"
#include "BKE_vfontdata.h"
#include "BLO_read_write.h"
static CLG_LogRef LOG = {"bke.data_transfer"};
static ThreadRWMutex vfont_rwlock = BLI_RWLOCK_INITIALIZER;
/**************************** Prototypes **************************/
static PackedFile *get_builtin_packedfile(void);
/****************************** VFont Datablock ************************/
static void vfont_init_data(ID *id)
{
VFont *vfont = (VFont *)id;
PackedFile *pf = get_builtin_packedfile();
if (pf) {
VFontData *vfd;
vfd = BKE_vfontdata_from_freetypefont(pf);
if (vfd) {
vfont->data = vfd;
BLI_strncpy(vfont->filepath, FO_BUILTIN_NAME, sizeof(vfont->filepath));
}
/* Free the packed file */
BKE_packedfile_free(pf);
}
}
static void vfont_copy_data(Main *UNUSED(bmain),
ID *id_dst,
const ID *UNUSED(id_src),
const int flag)
{
VFont *vfont_dst = (VFont *)id_dst;
/* We never handle usercount here for own data. */
const int flag_subdata = flag | LIB_ID_CREATE_NO_USER_REFCOUNT;
/* Just to be sure, should not have any value actually after reading time. */
vfont_dst->temp_pf = NULL;
if (vfont_dst->packedfile) {
vfont_dst->packedfile = BKE_packedfile_duplicate(vfont_dst->packedfile);
}
if (vfont_dst->data) {
vfont_dst->data = BKE_vfontdata_copy(vfont_dst->data, flag_subdata);
}
}
/** Free (or release) any data used by this font (does not free the font itself). */
static void vfont_free_data(ID *id)
{
VFont *vfont = (VFont *)id;
BKE_vfont_free_data(vfont);
if (vfont->packedfile) {
BKE_packedfile_free(vfont->packedfile);
vfont->packedfile = NULL;
}
}
static void vfont_foreach_path(ID *id, BPathForeachPathData *bpath_data)
{
VFont *vfont = (VFont *)id;
if (vfont->packedfile != NULL && (bpath_data->flag & BKE_BPATH_FOREACH_PATH_SKIP_PACKED) != 0) {
return;
}
if (BKE_vfont_is_builtin(vfont)) {
return;
}
BKE_bpath_foreach_path_fixed_process(bpath_data, vfont->filepath);
}
static void vfont_blend_write(BlendWriter *writer, ID *id, const void *id_address)
{
VFont *vf = (VFont *)id;
const bool is_undo = BLO_write_is_undo(writer);
/* Clean up, important in undo case to reduce false detection of changed datablocks. */
vf->data = NULL;
vf->temp_pf = NULL;
/* Do not store packed files in case this is a library override ID. */
if (ID_IS_OVERRIDE_LIBRARY(vf) && !is_undo) {
vf->packedfile = NULL;
}
/* write LibData */
BLO_write_id_struct(writer, VFont, id_address, &vf->id);
BKE_id_blend_write(writer, &vf->id);
/* direct data */
BKE_packedfile_blend_write(writer, vf->packedfile);
}
static void vfont_blend_read_data(BlendDataReader *reader, ID *id)
{
VFont *vf = (VFont *)id;
vf->data = NULL;
vf->temp_pf = NULL;
BKE_packedfile_blend_read(reader, &vf->packedfile);
}
IDTypeInfo IDType_ID_VF = {
.id_code = ID_VF,
.id_filter = FILTER_ID_VF,
.main_listbase_index = INDEX_ID_VF,
.struct_size = sizeof(VFont),
.name = "Font",
.name_plural = "fonts",
.translation_context = BLT_I18NCONTEXT_ID_VFONT,
.flags = IDTYPE_FLAGS_NO_ANIMDATA | IDTYPE_FLAGS_APPEND_IS_REUSABLE,
.asset_type_info = NULL,
.init_data = vfont_init_data,
.copy_data = vfont_copy_data,
.free_data = vfont_free_data,
.make_local = NULL,
.foreach_id = NULL,
.foreach_cache = NULL,
.foreach_path = vfont_foreach_path,
.owner_get = NULL,
.blend_write = vfont_blend_write,
.blend_read_data = vfont_blend_read_data,
.blend_read_lib = NULL,
.blend_read_expand = NULL,
.blend_read_undo_preserve = NULL,
.lib_override_apply_post = NULL,
};
/***************************** VFont *******************************/
void BKE_vfont_free_data(struct VFont *vfont)
{
if (vfont->data) {
if (vfont->data->characters) {
GHashIterator gh_iter;
GHASH_ITER (gh_iter, vfont->data->characters) {
VChar *che = BLI_ghashIterator_getValue(&gh_iter);
while (che->nurbsbase.first) {
Nurb *nu = che->nurbsbase.first;
if (nu->bezt) {
MEM_freeN(nu->bezt);
}
BLI_freelinkN(&che->nurbsbase, nu);
}
MEM_freeN(che);
}
BLI_ghash_free(vfont->data->characters, NULL, NULL);
}
MEM_freeN(vfont->data);
vfont->data = NULL;
}
if (vfont->temp_pf) {
BKE_packedfile_free(vfont->temp_pf); /* NULL when the font file can't be found on disk */
vfont->temp_pf = NULL;
}
}
static const void *builtin_font_data = NULL;
static int builtin_font_size = 0;
bool BKE_vfont_is_builtin(const struct VFont *vfont)
{
return STREQ(vfont->filepath, FO_BUILTIN_NAME);
}
void BKE_vfont_builtin_register(const void *mem, int size)
{
builtin_font_data = mem;
builtin_font_size = size;
}
static PackedFile *get_builtin_packedfile(void)
{
if (!builtin_font_data) {
CLOG_ERROR(&LOG, "Internal error, builtin font not loaded");
return NULL;
}
void *mem = MEM_mallocN(builtin_font_size, "vfd_builtin");
memcpy(mem, builtin_font_data, builtin_font_size);
return BKE_packedfile_new_from_memory(mem, builtin_font_size);
}
static VFontData *vfont_get_data(VFont *vfont)
{
if (vfont == NULL) {
return NULL;
}
/* And then set the data */
if (!vfont->data) {
PackedFile *pf;
BLI_rw_mutex_lock(&vfont_rwlock, THREAD_LOCK_WRITE);
if (vfont->data) {
/* Check data again, since it might have been already
* initialized from other thread (previous check is
* not accurate or threading, just prevents unneeded
* lock if all the data is here for sure).
*/
BLI_rw_mutex_unlock(&vfont_rwlock);
return vfont->data;
}
if (BKE_vfont_is_builtin(vfont)) {
pf = get_builtin_packedfile();
}
else {
if (vfont->packedfile) {
pf = vfont->packedfile;
/* We need to copy a tmp font to memory unless it is already there */
if (vfont->temp_pf == NULL) {
vfont->temp_pf = BKE_packedfile_duplicate(pf);
}
}
else {
pf = BKE_packedfile_new(NULL, vfont->filepath, ID_BLEND_PATH_FROM_GLOBAL(&vfont->id));
if (vfont->temp_pf == NULL) {
vfont->temp_pf = BKE_packedfile_new(
NULL, vfont->filepath, ID_BLEND_PATH_FROM_GLOBAL(&vfont->id));
}
}
if (!pf) {
CLOG_WARN(&LOG, "Font file doesn't exist: %s", vfont->filepath);
/* DON'T DO THIS
* missing file shouldn't modify path! - campbell */
#if 0
strcpy(vfont->filepath, FO_BUILTIN_NAME);
#endif
pf = get_builtin_packedfile();
}
}
if (pf) {
vfont->data = BKE_vfontdata_from_freetypefont(pf);
if (pf != vfont->packedfile) {
BKE_packedfile_free(pf);
}
}
BLI_rw_mutex_unlock(&vfont_rwlock);
}
return vfont->data;
}
VFont *BKE_vfont_load(Main *bmain, const char *filepath)
{
char filename[FILE_MAXFILE];
VFont *vfont = NULL;
PackedFile *pf;
bool is_builtin;
if (STREQ(filepath, FO_BUILTIN_NAME)) {
BLI_strncpy(filename, filepath, sizeof(filename));
pf = get_builtin_packedfile();
is_builtin = true;
}
else {
BLI_split_file_part(filepath, filename, sizeof(filename));
pf = BKE_packedfile_new(NULL, filepath, BKE_main_blendfile_path(bmain));
is_builtin = false;
}
if (pf) {
VFontData *vfd;
vfd = BKE_vfontdata_from_freetypefont(pf);
if (vfd) {
/* If there's a font name, use it for the ID name. */
vfont = BKE_libblock_alloc(bmain, ID_VF, vfd->name[0] ? vfd->name : filename, 0);
vfont->data = vfd;
BLI_strncpy(vfont->filepath, filepath, sizeof(vfont->filepath));
/* if auto-pack is on store the packed-file in de font structure */
if (!is_builtin && (G.fileflags & G_FILE_AUTOPACK)) {
vfont->packedfile = pf;
}
/* Do not add #FO_BUILTIN_NAME to temporary list-base. */
if (!STREQ(filename, FO_BUILTIN_NAME)) {
vfont->temp_pf = BKE_packedfile_new(NULL, filepath, BKE_main_blendfile_path(bmain));
}
}
/* Free the packed file */
if (!vfont || vfont->packedfile != pf) {
BKE_packedfile_free(pf);
}
}
return vfont;
}
VFont *BKE_vfont_load_exists_ex(struct Main *bmain, const char *filepath, bool *r_exists)
{
VFont *vfont;
char str[FILE_MAX], strtest[FILE_MAX];
BLI_strncpy(str, filepath, sizeof(str));
BLI_path_abs(str, BKE_main_blendfile_path(bmain));
/* first search an identical filepath */
for (vfont = bmain->fonts.first; vfont; vfont = vfont->id.next) {
BLI_strncpy(strtest, vfont->filepath, sizeof(vfont->filepath));
BLI_path_abs(strtest, ID_BLEND_PATH(bmain, &vfont->id));
if (BLI_path_cmp(strtest, str) == 0) {
id_us_plus(&vfont->id); /* officially should not, it doesn't link here! */
if (r_exists) {
*r_exists = true;
}
return vfont;
}
}
if (r_exists) {
*r_exists = false;
}
return BKE_vfont_load(bmain, filepath);
}
VFont *BKE_vfont_load_exists(struct Main *bmain, const char *filepath)
{
return BKE_vfont_load_exists_ex(bmain, filepath, NULL);
}
static VFont *which_vfont(Curve *cu, CharInfo *info)
{
switch (info->flag & (CU_CHINFO_BOLD | CU_CHINFO_ITALIC)) {
case CU_CHINFO_BOLD:
return cu->vfontb ? cu->vfontb : cu->vfont;
case CU_CHINFO_ITALIC:
return cu->vfonti ? cu->vfonti : cu->vfont;
case (CU_CHINFO_BOLD | CU_CHINFO_ITALIC):
return cu->vfontbi ? cu->vfontbi : cu->vfont;
default:
return cu->vfont;
}
}
VFont *BKE_vfont_builtin_get(void)
{
VFont *vfont;
for (vfont = G_MAIN->fonts.first; vfont; vfont = vfont->id.next) {
if (BKE_vfont_is_builtin(vfont)) {
return vfont;
}
}
return BKE_vfont_load(G_MAIN, FO_BUILTIN_NAME);
}
static VChar *find_vfont_char(VFontData *vfd, unsigned int character)
{
return BLI_ghash_lookup(vfd->characters, POINTER_FROM_UINT(character));
}
static void build_underline(Curve *cu,
ListBase *nubase,
const rctf *rect,
float yofs,
float rot,
int charidx,
short mat_nr,
const float font_size)
{
Nurb *nu2;
BPoint *bp;
nu2 = (Nurb *)MEM_callocN(sizeof(Nurb), "underline_nurb");
nu2->resolu = cu->resolu;
nu2->bezt = NULL;
nu2->knotsu = nu2->knotsv = NULL;
nu2->charidx = charidx + 1000;
if (mat_nr > 0) {
nu2->mat_nr = mat_nr - 1;
}
nu2->pntsu = 4;
nu2->pntsv = 1;
nu2->orderu = 4;
nu2->orderv = 1;
nu2->flagu = CU_NURB_CYCLIC;
bp = (BPoint *)MEM_calloc_arrayN(4, sizeof(BPoint), "underline_bp");
copy_v4_fl4(bp[0].vec, rect->xmin, (rect->ymax + yofs), 0.0f, 1.0f);
copy_v4_fl4(bp[1].vec, rect->xmax, (rect->ymax + yofs), 0.0f, 1.0f);
copy_v4_fl4(bp[2].vec, rect->xmax, (rect->ymin + yofs), 0.0f, 1.0f);
copy_v4_fl4(bp[3].vec, rect->xmin, (rect->ymin + yofs), 0.0f, 1.0f);
/* Used by curve extrusion. */
bp[0].radius = bp[1].radius = bp[2].radius = bp[3].radius = 1.0f;
nu2->bp = bp;
BLI_addtail(nubase, nu2);
if (rot != 0.0f) {
float si = sinf(rot);
float co = cosf(rot);
for (int i = nu2->pntsu; i > 0; i--) {
float *fp = bp->vec;
float x = fp[0] - rect->xmin;
float y = fp[1] - rect->ymin;
fp[0] = (+co * x + si * y) + rect->xmin;
fp[1] = (-si * x + co * y) + rect->ymin;
bp++;
}
bp = nu2->bp;
}
mul_v2_fl(bp[0].vec, font_size);
mul_v2_fl(bp[1].vec, font_size);
mul_v2_fl(bp[2].vec, font_size);
mul_v2_fl(bp[3].vec, font_size);
}
void BKE_vfont_build_char(Curve *cu,
ListBase *nubase,
unsigned int character,
CharInfo *info,
float ofsx,
float ofsy,
float rot,
int charidx,
const float fsize)
{
VFontData *vfd = vfont_get_data(which_vfont(cu, info));
if (!vfd) {
return;
}
/* make a copy at distance ofsx, ofsy with shear */
float shear = cu->shear;
float si = sinf(rot);
float co = cosf(rot);
VChar *che = find_vfont_char(vfd, character);
/* Select the glyph data */
Nurb *nu1 = NULL;
if (che) {
nu1 = che->nurbsbase.first;
}
/* Create the character */
while (nu1) {
BezTriple *bezt1 = nu1->bezt;
if (bezt1) {
Nurb *nu2 = (Nurb *)MEM_mallocN(sizeof(Nurb), "duplichar_nurb");
if (nu2 == NULL) {
break;
}
memcpy(nu2, nu1, sizeof(struct Nurb));
nu2->resolu = cu->resolu;
nu2->bp = NULL;
nu2->knotsu = nu2->knotsv = NULL;
nu2->flag = CU_SMOOTH;
nu2->charidx = charidx;
if (info->mat_nr > 0) {
nu2->mat_nr = info->mat_nr - 1;
}
else {
nu2->mat_nr = 0;
}
/* nu2->trim.first = 0; */
/* nu2->trim.last = 0; */
int u = nu2->pntsu;
BezTriple *bezt2 = (BezTriple *)MEM_malloc_arrayN(u, sizeof(BezTriple), "duplichar_bezt2");
if (bezt2 == NULL) {
MEM_freeN(nu2);
break;
}
memcpy(bezt2, bezt1, u * sizeof(struct BezTriple));
nu2->bezt = bezt2;
if (shear != 0.0f) {
bezt2 = nu2->bezt;
for (int i = nu2->pntsu; i > 0; i--) {
bezt2->vec[0][0] += shear * bezt2->vec[0][1];
bezt2->vec[1][0] += shear * bezt2->vec[1][1];
bezt2->vec[2][0] += shear * bezt2->vec[2][1];
bezt2++;
}
}
if (rot != 0.0f) {
bezt2 = nu2->bezt;
for (int i = nu2->pntsu; i > 0; i--) {
float *fp = bezt2->vec[0];
float x = fp[0];
fp[0] = co * x + si * fp[1];
fp[1] = -si * x + co * fp[1];
x = fp[3];
fp[3] = co * x + si * fp[4];
fp[4] = -si * x + co * fp[4];
x = fp[6];
fp[6] = co * x + si * fp[7];
fp[7] = -si * x + co * fp[7];
bezt2++;
}
}
bezt2 = nu2->bezt;
if (info->flag & CU_CHINFO_SMALLCAPS_CHECK) {
const float sca = cu->smallcaps_scale;
for (int i = nu2->pntsu; i > 0; i--) {
float *fp = bezt2->vec[0];
fp[0] *= sca;
fp[1] *= sca;
fp[3] *= sca;
fp[4] *= sca;
fp[6] *= sca;
fp[7] *= sca;
bezt2++;
}
}
bezt2 = nu2->bezt;
for (int i = nu2->pntsu; i > 0; i--) {
float *fp = bezt2->vec[0];
fp[0] = (fp[0] + ofsx) * fsize;
fp[1] = (fp[1] + ofsy) * fsize;
fp[3] = (fp[3] + ofsx) * fsize;
fp[4] = (fp[4] + ofsy) * fsize;
fp[6] = (fp[6] + ofsx) * fsize;
fp[7] = (fp[7] + ofsy) * fsize;
bezt2++;
}
BLI_addtail(nubase, nu2);
}
nu1 = nu1->next;
}
}
int BKE_vfont_select_get(Object *ob, int *r_start, int *r_end)
{
Curve *cu = ob->data;
EditFont *ef = cu->editfont;
int start, end, direction;
if ((ob->type != OB_FONT) || (ef == NULL)) {
return 0;
}
BLI_assert(ef->len >= 0);
BLI_assert(ef->selstart >= 0 && ef->selstart <= ef->len + 1);
BLI_assert(ef->selend >= 0 && ef->selend <= ef->len + 1);
BLI_assert(ef->pos >= 0 && ef->pos <= ef->len);
if (ef->selstart == 0) {
return 0;
}
if (ef->selstart <= ef->selend) {
start = ef->selstart - 1;
end = ef->selend - 1;
direction = 1;
}
else {
start = ef->selend;
end = ef->selstart - 2;
direction = -1;
}
if (start == end + 1) {
return 0;
}
BLI_assert(start < end + 1);
*r_start = start;
*r_end = end;
return direction;
}
void BKE_vfont_select_clamp(Object *ob)
{
Curve *cu = ob->data;
EditFont *ef = cu->editfont;
BLI_assert((ob->type == OB_FONT) && ef);
CLAMP_MAX(ef->pos, ef->len);
CLAMP_MAX(ef->selstart, ef->len + 1);
CLAMP_MAX(ef->selend, ef->len);
}
static float char_width(Curve *cu, VChar *che, CharInfo *info)
{
/* The character wasn't found, probably ascii = 0, then the width shall be 0 as well */
if (che == NULL) {
return 0.0f;
}
if (info->flag & CU_CHINFO_SMALLCAPS_CHECK) {
return che->width * cu->smallcaps_scale;
}
return che->width;
}
static void textbox_scale(TextBox *tb_dst, const TextBox *tb_src, float scale)
{
tb_dst->x = tb_src->x * scale;
tb_dst->y = tb_src->y * scale;
tb_dst->w = tb_src->w * scale;
tb_dst->h = tb_src->h * scale;
}
/**
* Used for storing per-line data for alignment & wrapping.
*/
struct TempLineInfo {
float x_min; /* left margin */
float x_max; /* right margin */
int char_nr; /* number of characters */
int wspace_nr; /* number of white-spaces of line */
};
/* -------------------------------------------------------------------- */
/** \name VFont Scale Overflow
*
* Scale the font to fit inside #TextBox bounds.
*
* - Scale horizontally when #TextBox.h is zero,
* otherwise scale vertically, allowing the text to wrap horizontally.
* - Never increase scale to fit, only ever scale on overflow.
* \{ */
typedef struct VFontToCurveIter {
int iteraction;
float scale_to_fit;
struct {
float min;
float max;
} bisect;
bool ok;
/**
* Wrap words that extends beyond the text-box width (enabled by default).
*
* Currently only disabled when scale-to-fit is enabled,
* so floating-point error doesn't cause unexpected wrapping, see T89241.
*
* \note This should only be set once, in the #VFONT_TO_CURVE_INIT pass
* otherwise iterations wont behave predictably, see T91401.
*/
bool word_wrap;
int status;
} VFontToCurveIter;
enum {
VFONT_TO_CURVE_INIT = 0,
VFONT_TO_CURVE_BISECT,
VFONT_TO_CURVE_SCALE_ONCE,
VFONT_TO_CURVE_DONE,
};
#define FONT_TO_CURVE_SCALE_ITERATIONS 20
#define FONT_TO_CURVE_SCALE_THRESHOLD 0.0001f
/** \} */
/**
* Font metric values explained:
*
* Baseline: Line where the text "rests", used as the origin vertical position for the glyphs.
* Em height: Space most glyphs should fit within.
* Ascent: the recommended distance above the baseline to fit most characters.
* Descent: the recommended distance below the baseline to fit most characters.
*
* We obtain ascent and descent from the font itself (FT_Face->ascender / face->height).
* And in some cases it is even the same value as FT_Face->bbox.yMax/yMin
* (font top and bottom respectively).
*
* The em_height here is relative to FT_Face->bbox.
*/
static float vfont_ascent(const VFontData *vfd)
{
return vfd->ascender * vfd->em_height;
}
static float vfont_descent(const VFontData *vfd)
{
return vfd->em_height - vfont_ascent(vfd);
}
static bool vfont_to_curve(Object *ob,
Curve *cu,
int mode,
VFontToCurveIter *iter_data,
ListBase *r_nubase,
const char32_t **r_text,
int *r_text_len,
bool *r_text_free,
struct CharTrans **r_chartransdata)
{
EditFont *ef = cu->editfont;
EditFontSelBox *selboxes = NULL;
VFont *vfont, *oldvfont;
VFontData *vfd = NULL;
CharInfo *info = NULL, *custrinfo;
TextBox tb_scale;
bool use_textbox;
VChar *che;
struct CharTrans *chartransdata = NULL, *ct;
struct TempLineInfo *lineinfo;
float *f, xof, yof, xtrax, linedist;
float twidth = 0, maxlen = 0;
int i, slen, j;
int curbox;
int selstart = 0, selend = 0;
int cnr = 0, lnr = 0, wsnr = 0;
const char32_t *mem = NULL;
char32_t ascii;
bool ok = false;
const float font_size = cu->fsize * iter_data->scale_to_fit;
const bool word_wrap = iter_data->word_wrap;
const float xof_scale = safe_divide(cu->xof, font_size);
const float yof_scale = safe_divide(cu->yof, font_size);
int last_line = -1;
/* Length of the text disregarding \n breaks. */
float current_line_length = 0.0f;
float longest_line_length = 0.0f;
/* Text at the beginning of the last used text-box (use for y-axis alignment).
* We over-allocate by one to simplify logic of getting last char. */
int *i_textbox_array = MEM_callocN(sizeof(*i_textbox_array) * (cu->totbox + 1),
"TextBox initial char index");
#define MARGIN_X_MIN (xof_scale + tb_scale.x)
#define MARGIN_Y_MIN (yof_scale + tb_scale.y)
/* NOTE: do calculations including the trailing '\0' of a string
* because the cursor can be at that location. */
BLI_assert(ob == NULL || ob->type == OB_FONT);
/* Set font data */
vfont = cu->vfont;
if (cu->str == NULL) {
return ok;
}
if (vfont == NULL) {
return ok;
}
vfd = vfont_get_data(vfont);
/* The VFont Data can not be found */
if (!vfd) {
return ok;
}
if (ef) {
slen = ef->len;
mem = ef->textbuf;
custrinfo = ef->textbufinfo;
}
else {
char32_t *mem_tmp;
slen = cu->len_char32;
/* Create unicode string */
mem_tmp = MEM_malloc_arrayN((slen + 1), sizeof(*mem_tmp), "convertedmem");
if (!mem_tmp) {
return ok;
}
BLI_str_utf8_as_utf32(mem_tmp, cu->str, slen + 1);
if (cu->strinfo == NULL) { /* old file */
cu->strinfo = MEM_calloc_arrayN((slen + 4), sizeof(CharInfo), "strinfo compat");
}
custrinfo = cu->strinfo;
if (!custrinfo) {
return ok;
}
mem = mem_tmp;
}
if (cu->tb == NULL) {
cu->tb = MEM_calloc_arrayN(MAXTEXTBOX, sizeof(TextBox), "TextBox compat");
}
if (ef != NULL && ob != NULL) {
if (ef->selboxes) {
MEM_freeN(ef->selboxes);
}
if (BKE_vfont_select_get(ob, &selstart, &selend)) {
ef->selboxes_len = (selend - selstart) + 1;
ef->selboxes = MEM_calloc_arrayN(ef->selboxes_len, sizeof(EditFontSelBox), "font selboxes");
}
else {
ef->selboxes_len = 0;
ef->selboxes = NULL;
}
selboxes = ef->selboxes;
}
/* calc offset and rotation of each char */
ct = chartransdata = MEM_calloc_arrayN((slen + 1), sizeof(struct CharTrans), "buildtext");
/* We assume the worst case: 1 character per line (is freed at end anyway) */
lineinfo = MEM_malloc_arrayN((slen * 2 + 1), sizeof(*lineinfo), "lineinfo");
linedist = cu->linedist;
curbox = 0;
textbox_scale(&tb_scale, &cu->tb[curbox], safe_divide(1.0f, font_size));
use_textbox = (tb_scale.w != 0.0f);
xof = MARGIN_X_MIN;
yof = MARGIN_Y_MIN;
xtrax = 0.5f * cu->spacing - 0.5f;
oldvfont = NULL;
for (i = 0; i < slen; i++) {
custrinfo[i].flag &= ~(CU_CHINFO_WRAP | CU_CHINFO_SMALLCAPS_CHECK | CU_CHINFO_OVERFLOW);
}
i = 0;
while (i <= slen) {
/* Characters in the list */
info = &custrinfo[i];
ascii = mem[i];
if (info->flag & CU_CHINFO_SMALLCAPS) {
ascii = towupper(ascii);
if (mem[i] != ascii) {
info->flag |= CU_CHINFO_SMALLCAPS_CHECK;
}
}
vfont = which_vfont(cu, info);
if (vfont == NULL) {
break;
}
if (vfont != oldvfont) {
vfd = vfont_get_data(vfont);
oldvfont = vfont;
}
/* VFont Data for VFont couldn't be found */
if (!vfd) {
MEM_freeN(chartransdata);
chartransdata = NULL;
MEM_freeN(lineinfo);
goto finally;
}
if (!ELEM(ascii, '\n', '\0')) {
BLI_rw_mutex_lock(&vfont_rwlock, THREAD_LOCK_READ);
che = find_vfont_char(vfd, ascii);
BLI_rw_mutex_unlock(&vfont_rwlock);
/* The character wasn't in the current curve base so load it.
* But if the font is built-in then do not try loading since
* whole font is in the memory already. */
if (che == NULL && BKE_vfont_is_builtin(vfont) == false) {
BLI_rw_mutex_lock(&vfont_rwlock, THREAD_LOCK_WRITE);
/* Check it once again, char might have been already load
* between previous #BLI_rw_mutex_unlock() and this #BLI_rw_mutex_lock().
*
* Such a check should not be a bottleneck since it wouldn't
* happen often once all the chars are load. */
if ((che = find_vfont_char(vfd, ascii)) == NULL) {
che = BKE_vfontdata_char_from_freetypefont(vfont, ascii);
}
BLI_rw_mutex_unlock(&vfont_rwlock);
}
}
else {
che = NULL;
}
twidth = char_width(cu, che, info);
/* Calculate positions. */
if ((tb_scale.w != 0.0f) && (ct->dobreak == 0)) { /* May need wrapping. */
const float x_available = xof_scale + tb_scale.w;
const float x_used = (xof - tb_scale.x) + twidth;
if (word_wrap == false) {
/* When scale to fit is used, don't do any wrapping.
*
* Floating precision error can cause the text to be slightly larger.
* Assert this is a small value as large values indicate incorrect
* calculations with scale-to-fit which shouldn't be ignored. See T89241. */
if (x_used > x_available) {
BLI_assert_msg(compare_ff_relative(x_used, x_available, FLT_EPSILON, 64),
"VFontToCurveIter.scale_to_fit not set correctly!");
}
}
else if (x_used > x_available) {
// CLOG_WARN(&LOG, "linewidth exceeded: %c%c%c...", mem[i], mem[i+1], mem[i+2]);
bool dobreak = false;
for (j = i; (mem[j] != '\n') && (chartransdata[j].dobreak == 0); j--) {
/* Special case when there are no breaks possible. */
if (UNLIKELY(j == 0)) {
if (i == slen) {
/* Use the behavior of zero a height text-box when a break cannot be inserted.
*
* Typically when a text-box has any height and overflow is set to scale
* the text will wrap to fit the width as necessary. When wrapping isn't
* possible it's important to use the same code-path as zero-height lines.
* Without this exception a single word will not scale-to-fit (see: T95116). */
tb_scale.h = 0.0f;
}
break;
}
if (ELEM(mem[j], ' ', '-')) {
ct -= (i - (j - 1));
cnr -= (i - (j - 1));
if (mem[j] == ' ') {
wsnr--;
}
if (mem[j] == '-') {
wsnr++;
}
i = j - 1;
xof = ct->xof;
ct[1].dobreak = 1;
custrinfo[i + 1].flag |= CU_CHINFO_WRAP;
dobreak = true;
break;
}
BLI_assert(chartransdata[j].dobreak == 0);
}
if (dobreak) {
if (tb_scale.h == 0.0f) {
/* NOTE: If underlined text is truncated away, the extra space is also truncated. */
custrinfo[i + 1].flag |= CU_CHINFO_OVERFLOW;
}
/* Since a break was added, re-run this loop with `i` at it's new value. */
continue;
}
}
}
if (ascii == '\n' || ascii == 0 || ct->dobreak) {
ct->xof = xof;
ct->yof = yof;
ct->linenr = lnr;
ct->charnr = cnr;
yof -= linedist;
lineinfo[lnr].x_min = (xof - xtrax) - tb_scale.x;
lineinfo[lnr].x_max = tb_scale.w;
lineinfo[lnr].char_nr = cnr;
lineinfo[lnr].wspace_nr = wsnr;
CLAMP_MIN(maxlen, lineinfo[lnr].x_min);
if ((tb_scale.h != 0.0f) && ((-(yof - tb_scale.y)) > (tb_scale.h - linedist) - yof_scale)) {
if (cu->totbox > (curbox + 1)) {
maxlen = 0;
curbox++;
i_textbox_array[curbox] = i + 1;
textbox_scale(&tb_scale, &cu->tb[curbox], 1.0f / font_size);
yof = MARGIN_Y_MIN;
}
else if (last_line == -1) {
last_line = lnr + 1;
info->flag |= CU_CHINFO_OVERFLOW;
}
}
current_line_length += xof - MARGIN_X_MIN;
if (ct->dobreak) {
current_line_length += twidth;
}
else {
longest_line_length = MAX2(current_line_length, longest_line_length);
current_line_length = 0.0f;
}
xof = MARGIN_X_MIN;
lnr++;
cnr = 0;
wsnr = 0;
}
else if (ascii == '\t') { /* Tab character. */
float tabfac;
ct->xof = xof;
ct->yof = yof;
ct->linenr = lnr;
ct->charnr = cnr++;
tabfac = (xof - MARGIN_X_MIN + 0.01f);
tabfac = 2.0f * ceilf(tabfac / 2.0f);
xof = MARGIN_X_MIN + tabfac;
}
else {
EditFontSelBox *sb = NULL;
float wsfac;
ct->xof = xof;
ct->yof = yof;
ct->linenr = lnr;
ct->charnr = cnr++;
if (selboxes && (i >= selstart) && (i <= selend)) {
sb = &selboxes[i - selstart];
sb->y = yof * font_size - linedist * font_size * 0.1f;
sb->h = linedist * font_size;
sb->w = xof * font_size;
}
if (ascii == ' ') { /* Space character. */
wsfac = cu->wordspace;
wsnr++;
}
else {
wsfac = 1.0f;
}
/* Set the width of the character. */
twidth = char_width(cu, che, info);
xof += (twidth * wsfac * (1.0f + (info->kern / 40.0f))) + xtrax;
if (sb) {
sb->w = (xof * font_size) - sb->w;
}
}
ct++;
i++;
}
current_line_length += xof + twidth - MARGIN_X_MIN;
longest_line_length = MAX2(current_line_length, longest_line_length);
cu->lines = 1;
for (i = 0; i <= slen; i++) {
ascii = mem[i];
ct = &chartransdata[i];
if (ascii == '\n' || ct->dobreak) {
cu->lines++;
}
}
/* Line-data is now: width of line. */
if (cu->spacemode != CU_ALIGN_X_LEFT) {
ct = chartransdata;
if (cu->spacemode == CU_ALIGN_X_RIGHT) {
struct TempLineInfo *li;
for (i = 0, li = lineinfo; i < lnr; i++, li++) {
li->x_min = (li->x_max - li->x_min) + xof_scale;
}
for (i = 0; i <= slen; i++) {
ct->xof += lineinfo[ct->linenr].x_min;
ct++;
}
}
else if (cu->spacemode == CU_ALIGN_X_MIDDLE) {
struct TempLineInfo *li;
for (i = 0, li = lineinfo; i < lnr; i++, li++) {
li->x_min = ((li->x_max - li->x_min) + xof_scale) / 2.0f;
}
for (i = 0; i <= slen; i++) {
ct->xof += lineinfo[ct->linenr].x_min;
ct++;
}
}
else if ((cu->spacemode == CU_ALIGN_X_FLUSH) && use_textbox) {
struct TempLineInfo *li;
for (i = 0, li = lineinfo; i < lnr; i++, li++) {
li->x_min = ((li->x_max - li->x_min) + xof_scale);
if (li->char_nr > 1) {
li->x_min /= (float)(li->char_nr - 1);
}
}
for (i = 0; i <= slen; i++) {
for (j = i; (!ELEM(mem[j], '\0', '\n')) && (chartransdata[j].dobreak == 0) && (j < slen);
j++) {
/* do nothing */
}
// if ((mem[j] != '\n') && (mem[j])) {
ct->xof += ct->charnr * lineinfo[ct->linenr].x_min;
// }
ct++;
}
}
else if ((cu->spacemode == CU_ALIGN_X_JUSTIFY) && use_textbox) {
float curofs = 0.0f;
for (i = 0; i <= slen; i++) {
for (j = i; (mem[j]) && (mem[j] != '\n') && (chartransdata[j].dobreak == 0) && (j < slen);
j++) {
/* pass */
}
if ((mem[j] != '\n') && ((chartransdata[j].dobreak != 0))) {
if (mem[i] == ' ') {
struct TempLineInfo *li;
li = &lineinfo[ct->linenr];
curofs += ((li->x_max - li->x_min) + xof_scale) / (float)li->wspace_nr;
}
ct->xof += curofs;
}
if (mem[i] == '\n' || chartransdata[i].dobreak) {
curofs = 0;
}
ct++;
}
}
}
/* Top-baseline is default, in this case, do nothing. */
if (cu->align_y != CU_ALIGN_Y_TOP_BASELINE) {
if (tb_scale.h != 0.0f) {
/* We need to loop all the text-boxes even the "full" ones.
* This way they all get the same vertical padding. */
for (int tb_index = 0; tb_index < cu->totbox; tb_index++) {
struct CharTrans *ct_first, *ct_last;
const int i_textbox = i_textbox_array[tb_index];
const int i_textbox_next = i_textbox_array[tb_index + 1];
const bool is_last_filled_textbox = ELEM(i_textbox_next, 0, slen + 1);
int lines;
ct_first = chartransdata + i_textbox;
ct_last = chartransdata + (is_last_filled_textbox ? slen : i_textbox_next - 1);
lines = ct_last->linenr - ct_first->linenr + 1;
if (cu->overflow == CU_OVERFLOW_TRUNCATE) {
/* Ensure overflow doesn't truncate text, before centering vertically
* giving odd/buggy results, see: T66614. */
if ((tb_index == cu->totbox - 1) && (last_line != -1)) {
lines = last_line - ct_first->linenr;
}
}
textbox_scale(&tb_scale, &cu->tb[tb_index], 1.0f / font_size);
/* The initial Y origin of the text-box is hard-coded to 1.0f * text scale. */
const float textbox_y_origin = 1.0f;
float yoff = 0.0f;
switch (cu->align_y) {
case CU_ALIGN_Y_TOP_BASELINE:
break;
case CU_ALIGN_Y_TOP:
yoff = textbox_y_origin - vfont_ascent(vfd);
break;
case CU_ALIGN_Y_CENTER:
yoff = ((((vfd->em_height + (lines - 1) * linedist) * 0.5f) - vfont_ascent(vfd)) -
(tb_scale.h * 0.5f) + textbox_y_origin);
break;
case CU_ALIGN_Y_BOTTOM_BASELINE:
yoff = textbox_y_origin + ((lines - 1) * linedist) - tb_scale.h;
break;
case CU_ALIGN_Y_BOTTOM:
yoff = textbox_y_origin + ((lines - 1) * linedist) - tb_scale.h + vfont_descent(vfd);
break;
}
for (ct = ct_first; ct <= ct_last; ct++) {
ct->yof += yoff;
}
if (is_last_filled_textbox) {
break;
}
}
}
else {
/* Non text-box case handled separately. */
float yoff = 0.0f;
switch (cu->align_y) {
case CU_ALIGN_Y_TOP_BASELINE:
break;
case CU_ALIGN_Y_TOP:
yoff = -vfont_ascent(vfd);
break;
case CU_ALIGN_Y_CENTER:
yoff = ((vfd->em_height + (lnr - 1) * linedist) * 0.5f) - vfont_ascent(vfd);
break;
case CU_ALIGN_Y_BOTTOM_BASELINE:
yoff = (lnr - 1) * linedist;
break;
case CU_ALIGN_Y_BOTTOM:
yoff = (lnr - 1) * linedist + vfont_descent(vfd);
break;
}
ct = chartransdata;
for (i = 0; i <= slen; i++) {
ct->yof += yoff;
ct++;
}
}
}
MEM_freeN(lineinfo);
MEM_freeN(i_textbox_array);
/* TEXT ON CURVE */
/* NOTE: Only #OB_CURVES_LEGACY objects could have a path. */
if (cu->textoncurve && cu->textoncurve->type == OB_CURVES_LEGACY) {
BLI_assert(cu->textoncurve->runtime.curve_cache != NULL);
if (cu->textoncurve->runtime.curve_cache != NULL &&
cu->textoncurve->runtime.curve_cache->anim_path_accum_length != NULL) {
float distfac, imat[4][4], imat3[3][3], cmat[3][3];
float minx, maxx;
float timeofs, sizefac;
if (ob != NULL) {
invert_m4_m4(imat, ob->obmat);
}
else {
unit_m4(imat);
}
copy_m3_m4(imat3, imat);
copy_m3_m4(cmat, cu->textoncurve->obmat);
mul_m3_m3m3(cmat, cmat, imat3);
sizefac = normalize_v3(cmat[0]) / font_size;
ct = chartransdata;
minx = maxx = ct->xof;
ct++;
for (i = 1; i <= slen; i++, ct++) {
if (minx > ct->xof) {
minx = ct->xof;
}
if (maxx < ct->xof) {
maxx = ct->xof;
}
}
/* We put the x-coordinate exact at the curve, the y is rotated. */
/* length correction */
const float chartrans_size_x = maxx - minx;
if (chartrans_size_x != 0.0f) {
const CurveCache *cc = cu->textoncurve->runtime.curve_cache;
const float totdist = BKE_anim_path_get_length(cc);
distfac = (sizefac * totdist) / chartrans_size_x;
distfac = (distfac > 1.0f) ? (1.0f / distfac) : 1.0f;
}
else {
/* Happens when there are no characters, set this value to place the text cursor. */
distfac = 0.0f;
}
timeofs = 0.0f;
if (distfac < 1.0f) {
/* Path longer than text: space-mode is involved. */
if (cu->spacemode == CU_ALIGN_X_RIGHT) {
timeofs = 1.0f - distfac;
}
else if (cu->spacemode == CU_ALIGN_X_MIDDLE) {
timeofs = (1.0f - distfac) / 2.0f;
}
else if (cu->spacemode == CU_ALIGN_X_FLUSH) {
distfac = 1.0f;
}
}
if (chartrans_size_x != 0.0f) {
distfac /= chartrans_size_x;
}
timeofs += distfac * cu->xof; /* not cyclic */
ct = chartransdata;
for (i = 0; i <= slen; i++, ct++) {
float ctime, dtime, vec[4], rotvec[3];
float si, co;
/* Rotate around center character. */
info = &custrinfo[i];
ascii = mem[i];
if (info->flag & CU_CHINFO_SMALLCAPS_CHECK) {
ascii = towupper(ascii);
}
che = find_vfont_char(vfd, ascii);
twidth = char_width(cu, che, info);
dtime = distfac * 0.5f * twidth;
ctime = timeofs + distfac * (ct->xof - minx);
CLAMP(ctime, 0.0f, 1.0f);
/* Calculate the right loc AND the right rot separately. */
/* `vec` needs 4 items. */
BKE_where_on_path(cu->textoncurve, ctime, vec, NULL, NULL, NULL, NULL);
BKE_where_on_path(cu->textoncurve, ctime + dtime, NULL, rotvec, NULL, NULL, NULL);
mul_v3_fl(vec, sizefac);
ct->rot = (float)M_PI - atan2f(rotvec[1], rotvec[0]);
si = sinf(ct->rot);
co = cosf(ct->rot);
yof = ct->yof;
ct->xof = vec[0] + si * yof;
ct->yof = vec[1] + co * yof;
if (selboxes && (i >= selstart) && (i <= selend)) {
EditFontSelBox *sb;
sb = &selboxes[i - selstart];
sb->rot = -ct->rot;
}
}
}
}
if (selboxes) {
ct = chartransdata;
for (i = 0; i <= selend; i++, ct++) {
if (i >= selstart) {
selboxes[i - selstart].x = ct->xof * font_size;
selboxes[i - selstart].y = ct->yof * font_size;
}
}
}
if (ELEM(mode, FO_CURSUP, FO_CURSDOWN, FO_PAGEUP, FO_PAGEDOWN) &&
iter_data->status == VFONT_TO_CURVE_INIT) {
ct = &chartransdata[ef->pos];
if (ELEM(mode, FO_CURSUP, FO_PAGEUP) && ct->linenr == 0) {
/* pass */
}
else if (ELEM(mode, FO_CURSDOWN, FO_PAGEDOWN) && ct->linenr == lnr) {
/* pass */
}
else {
switch (mode) {
case FO_CURSUP:
lnr = ct->linenr - 1;
break;
case FO_CURSDOWN:
lnr = ct->linenr + 1;
break;
case FO_PAGEUP:
lnr = ct->linenr - 10;
break;
case FO_PAGEDOWN:
lnr = ct->linenr + 10;
break;
}
cnr = ct->charnr;
/* Seek for char with `lnr` & `cnr`. */
ef->pos = 0;
ct = chartransdata;
for (i = 0; i < slen; i++) {
if (ct->linenr == lnr) {
if ((ct->charnr == cnr) || ((ct + 1)->charnr == 0)) {
break;
}
}
else if (ct->linenr > lnr) {
break;
}
ef->pos++;
ct++;
}
}
}
/* Cursor first. */
if (ef) {
float si, co;
ct = &chartransdata[ef->pos];
si = sinf(ct->rot);
co = cosf(ct->rot);
f = ef->textcurs[0];
f[0] = font_size * (-0.1f * co + ct->xof);
f[1] = font_size * (0.1f * si + ct->yof);
f[2] = font_size * (0.1f * co + ct->xof);
f[3] = font_size * (-0.1f * si + ct->yof);
f[4] = font_size * (0.1f * co + 0.8f * si + ct->xof);
f[5] = font_size * (-0.1f * si + 0.8f * co + ct->yof);
f[6] = font_size * (-0.1f * co + 0.8f * si + ct->xof);
f[7] = font_size * (0.1f * si + 0.8f * co + ct->yof);
}
if (mode == FO_SELCHANGE) {
MEM_freeN(chartransdata);
chartransdata = NULL;
}
else if (mode == FO_EDIT) {
/* Make NURBS-data. */
BKE_nurbList_free(r_nubase);
ct = chartransdata;
for (i = 0; i < slen; i++) {
unsigned int cha = (unsigned int)mem[i];
info = &(custrinfo[i]);
if ((cu->overflow == CU_OVERFLOW_TRUNCATE) && (ob && ob->mode != OB_MODE_EDIT) &&
(info->flag & CU_CHINFO_OVERFLOW)) {
break;
}
if (info->flag & CU_CHINFO_SMALLCAPS_CHECK) {
cha = towupper(cha);
}
/* Only do that check in case we do have an object, otherwise all materials get erased every
* time that code is called without an object. */
if (ob != NULL && (info->mat_nr > (ob->totcol))) {
// CLOG_ERROR(
// &LOG, "Illegal material index (%d) in text object, setting to 0", info->mat_nr);
info->mat_nr = 0;
}
/* We don't want to see any character for '\n'. */
if (cha != '\n') {
BKE_vfont_build_char(cu, r_nubase, cha, info, ct->xof, ct->yof, ct->rot, i, font_size);
}
if ((info->flag & CU_CHINFO_UNDERLINE) && (cha != '\n')) {
float ulwidth, uloverlap = 0.0f;
rctf rect;
if ((i < (slen - 1)) && (mem[i + 1] != '\n') &&
((mem[i + 1] != ' ') || (custrinfo[i + 1].flag & CU_CHINFO_UNDERLINE)) &&
((custrinfo[i + 1].flag & CU_CHINFO_WRAP) == 0)) {
uloverlap = xtrax + 0.1f;
}
/* Find the character, the characters has to be in the memory already
* since character checking has been done earlier already. */
che = find_vfont_char(vfd, cha);
twidth = char_width(cu, che, info);
ulwidth = (twidth * (1.0f + (info->kern / 40.0f))) + uloverlap;
rect.xmin = ct->xof;
rect.xmax = rect.xmin + ulwidth;
rect.ymin = ct->yof;
rect.ymax = rect.ymin - cu->ulheight;
build_underline(
cu, r_nubase, &rect, cu->ulpos - 0.05f, ct->rot, i, info->mat_nr, font_size);
}
ct++;
}
}
if (iter_data->status == VFONT_TO_CURVE_SCALE_ONCE) {
/* That means we were in a final run, just exit. */
BLI_assert(cu->overflow == CU_OVERFLOW_SCALE);
iter_data->status = VFONT_TO_CURVE_DONE;
}
else if (cu->overflow == CU_OVERFLOW_NONE) {
/* Do nothing. */
}
else if ((tb_scale.h == 0.0f) && (tb_scale.w == 0.0f)) {
/* Do nothing. */
}
else if (cu->overflow == CU_OVERFLOW_SCALE) {
if ((cu->totbox == 1) && ((tb_scale.w == 0.0f) || (tb_scale.h == 0.0f))) {
/* These are special cases, simpler to deal with. */
if (tb_scale.w == 0.0f) {
/* This is a potential vertical overflow.
* Since there is no width limit, all the new lines are from line breaks. */
if ((last_line != -1) && (lnr > last_line)) {
const float total_text_height = lnr * linedist;
iter_data->scale_to_fit = tb_scale.h / total_text_height;
iter_data->status = VFONT_TO_CURVE_SCALE_ONCE;
iter_data->word_wrap = false;
}
}
else if (tb_scale.h == 0.0f) {
/* This is a horizontal overflow. */
if (longest_line_length > tb_scale.w) {
/* We make sure longest line before it broke can fit here. */
float scale_to_fit = tb_scale.w / longest_line_length;
iter_data->scale_to_fit = scale_to_fit;
iter_data->status = VFONT_TO_CURVE_SCALE_ONCE;
iter_data->word_wrap = false;
}
}
}
else {
/* This is the really complicated case, the best we can do is to iterate over
* this function a few times until we get an acceptable result.
*
* Keep in mind that there is no single number that will make all fit to the end.
* In a way, our ultimate goal is to get the highest scale that still leads to the
* number of extra lines to zero. */
if (iter_data->status == VFONT_TO_CURVE_INIT) {
bool valid = true;
for (int tb_index = 0; tb_index <= curbox; tb_index++) {
TextBox *tb = &cu->tb[tb_index];
if ((tb->w == 0.0f) || (tb->h == 0.0f)) {
valid = false;
break;
}
}
if (valid && (last_line != -1) && (lnr > last_line)) {
const float total_text_height = lnr * linedist;
float scale_to_fit = tb_scale.h / total_text_height;
iter_data->bisect.max = 1.0f;
iter_data->bisect.min = scale_to_fit;
iter_data->status = VFONT_TO_CURVE_BISECT;
}
}
else {
BLI_assert(iter_data->status == VFONT_TO_CURVE_BISECT);
/* Try to get the highest scale that gives us the exactly
* number of lines we need. */
bool valid = false;
if ((last_line != -1) && (lnr > last_line)) {
/* It is overflowing, scale it down. */
iter_data->bisect.max = iter_data->scale_to_fit;
}
else {
/* It fits inside the text-box, scale it up. */
iter_data->bisect.min = iter_data->scale_to_fit;
valid = true;
}
/* Bisecting to try to find the best fit. */
iter_data->scale_to_fit = (iter_data->bisect.max + iter_data->bisect.min) * 0.5f;
/* We iterated enough or got a good enough result. */
if ((!iter_data->iteraction--) || ((iter_data->bisect.max - iter_data->bisect.min) <
(cu->fsize * FONT_TO_CURVE_SCALE_THRESHOLD))) {
if (valid) {
iter_data->status = VFONT_TO_CURVE_DONE;
}
else {
iter_data->scale_to_fit = iter_data->bisect.min;
iter_data->status = VFONT_TO_CURVE_SCALE_ONCE;
}
}
}
}
}
/* Scale to fit only works for single text box layouts. */
if (ELEM(iter_data->status, VFONT_TO_CURVE_SCALE_ONCE, VFONT_TO_CURVE_BISECT)) {
/* Always cleanup before going to the scale-to-fit repetition. */
if (r_nubase != NULL) {
BKE_nurbList_free(r_nubase);
}
if (chartransdata != NULL) {
MEM_freeN(chartransdata);
}
if (ef == NULL) {
MEM_freeN((void *)mem);
}
return true;
}
ok = true;
finally:
if (r_text) {
*r_text = mem;
*r_text_len = slen;
*r_text_free = (ef == NULL);
}
else {
if (ef == NULL) {
MEM_freeN((void *)mem);
}
}
if (chartransdata) {
if (ok && r_chartransdata) {
*r_chartransdata = chartransdata;
}
else {
MEM_freeN(chartransdata);
}
}
/* Store the effective scale, to use for the text-box lines. */
cu->fsize_realtime = font_size;
return ok;
#undef MARGIN_X_MIN
#undef MARGIN_Y_MIN
}
#undef DESCENT
#undef ASCENT
bool BKE_vfont_to_curve_ex(Object *ob,
Curve *cu,
int mode,
ListBase *r_nubase,
const char32_t **r_text,
int *r_text_len,
bool *r_text_free,
struct CharTrans **r_chartransdata)
{
VFontToCurveIter data = {
.iteraction = cu->totbox * FONT_TO_CURVE_SCALE_ITERATIONS,
.scale_to_fit = 1.0f,
.word_wrap = true,
.ok = true,
.status = VFONT_TO_CURVE_INIT,
};
do {
data.ok &= vfont_to_curve(
ob, cu, mode, &data, r_nubase, r_text, r_text_len, r_text_free, r_chartransdata);
} while (data.ok && ELEM(data.status, VFONT_TO_CURVE_SCALE_ONCE, VFONT_TO_CURVE_BISECT));
return data.ok;
}
#undef FONT_TO_CURVE_SCALE_ITERATIONS
#undef FONT_TO_CURVE_SCALE_THRESHOLD
bool BKE_vfont_to_curve_nubase(Object *ob, int mode, ListBase *r_nubase)
{
BLI_assert(ob->type == OB_FONT);
return BKE_vfont_to_curve_ex(ob, ob->data, mode, r_nubase, NULL, NULL, NULL, NULL);
}
bool BKE_vfont_to_curve(Object *ob, int mode)
{
Curve *cu = ob->data;
return BKE_vfont_to_curve_ex(ob, ob->data, mode, &cu->nurb, NULL, NULL, NULL, NULL);
}
/* -------------------------------------------------------------------- */
/** \name VFont Clipboard
* \{ */
static struct {
char32_t *text_buffer;
CharInfo *info_buffer;
size_t len_utf32;
size_t len_utf8;
} g_vfont_clipboard = {NULL};
void BKE_vfont_clipboard_free(void)
{
MEM_SAFE_FREE(g_vfont_clipboard.text_buffer);
MEM_SAFE_FREE(g_vfont_clipboard.info_buffer);
g_vfont_clipboard.len_utf32 = 0;
g_vfont_clipboard.len_utf8 = 0;
}
void BKE_vfont_clipboard_set(const char32_t *text_buf, const CharInfo *info_buf, const size_t len)
{
char32_t *text;
CharInfo *info;
/* Clean previous buffers. */
BKE_vfont_clipboard_free();
text = MEM_malloc_arrayN((len + 1), sizeof(*text), __func__);
if (text == NULL) {
return;
}
info = MEM_malloc_arrayN(len, sizeof(CharInfo), __func__);
if (info == NULL) {
MEM_freeN(text);
return;
}
memcpy(text, text_buf, len * sizeof(*text));
text[len] = '\0';
memcpy(info, info_buf, len * sizeof(CharInfo));
/* store new buffers */
g_vfont_clipboard.text_buffer = text;
g_vfont_clipboard.info_buffer = info;
g_vfont_clipboard.len_utf8 = BLI_str_utf32_as_utf8_len(text);
g_vfont_clipboard.len_utf32 = len;
}
void BKE_vfont_clipboard_get(char32_t **r_text_buf,
CharInfo **r_info_buf,
size_t *r_len_utf8,
size_t *r_len_utf32)
{
if (r_text_buf) {
*r_text_buf = g_vfont_clipboard.text_buffer;
}
if (r_info_buf) {
*r_info_buf = g_vfont_clipboard.info_buffer;
}
if (r_len_utf32) {
*r_len_utf32 = g_vfont_clipboard.len_utf32;
}
if (r_len_utf8) {
*r_len_utf8 = g_vfont_clipboard.len_utf8;
}
}
/** \} */
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